What to send for a Tianma alternative source evaluation
One part number is enough to start. The list below is what turns that part number into a reviewed engineering recommendation instead of a guess based on resolution and connector pitch.
Start with the part number only
Enter the original code in the alternative source finder. If it is one of the 53 Tianma standard parts we evaluated, the tool returns the published grade immediately. If it is not, the same input opens an engineering evaluation request with the code pre-filled. Nothing else is required to open the request; the material below is what makes the answer conclusive.
The grading rules behind those three outcomes are published in how we graded 53 Tianma standard parts, and the full URL index is on the Tianma alternative source page.
Information that makes the review conclusive
| Item | What our engineers check with it | If it is not available yet |
|---|---|---|
| Complete original part number and suffix | Revision-specific FPC, backlight, driver and touch configuration. | A clear photo of the module label and FPC marking is enough for a first pass. |
| Original datasheet or mechanical drawing | Outline, active area, thickness, mounting points, bezel opening and FPC exit position. | We mark reconstructed values as unconfirmed and request the drawing before sign-off. |
| Connector and FPC details | Connector family, pin count, pitch, contact side, insertion direction, tail length and bend allowance. | Photos of both connectors plus the host board footprint support a preliminary comparison. |
| Host interface and timing | RGB / LVDS / MIPI / MCU / SPI mode, pixel clock, sync polarity, lane mapping and data format. | Provide the display section of the host schematic or the controller configuration file. |
| Power rails and power-up sequence | Logic, I/O, analog, touch and backlight rails, reset and enable ordering. | List the measured rails on the existing board; we flag unknown sequencing as an open item. |
| Backlight electrical conditions | LED string arrangement, forward voltage, drive current, dimming method and driver output range. | State whether the existing driver is integrated or external and its control signal. |
| Touch and front-stack requirements | No touch, capacitive or resistive; cover lens, bonding, gasket and active-area alignment. | Touch is a selectable ODM/OEM option, so it can be decided during the review. |
| Optical and environmental conditions | Brightness, viewing direction, contrast, surface treatment, operating and storage temperature. | Describe the installation environment; we propose a test condition for approval. |
| Project stage and enclosure limits | Sample approval path, expected configuration freeze and physical clearances. | A short description of the build stage is sufficient to sequence the review. |
None of these items requires a purchase commitment. They define the evidence used to decide whether a catalog module can be published as a cross-reference, offered as a candidate with listed differences, or whether a custom ODM/OEM module is the correct route.
How the review runs
- Identify the exact original module. Record the full code, revision and options; where the datasheet is unavailable, label every reconstructed requirement by its evidence source.
- Map the display parameters. Compare size, resolution, active area, interface family, luminance and panel mode against the 197-module catalog using the published grading rules.
- Map the host boundary. Compare connector pin assignment, FPC routing, power sequencing, backlight drive and timing against the host board, one row per signal where a pin map is available.
- Classify the outcome. Published engineering cross-reference, engineering candidate with itemised differences, or no published cross-reference with an ODM/OEM route.
- Confirm the configuration. Record the exact RONEN part number, revision, firmware, touch and backlight configuration, plus the open items that must be validated on samples.
Three possible outcomes
| Outcome | What you receive | Next step |
|---|---|---|
| Published engineering cross-reference | The RONEN module and the side-by-side published parameter table. | Review connector, timing and backlight on your host board, then request samples for validation. |
| Engineering candidate | The candidate module with every published parameter difference listed. | Decide per project whether the difference is acceptable or requires a controlled firmware, FPC or optical change. |
| No published cross-reference | An explicit no-match statement plus nearby catalog modules marked as evaluation material only. | Proceed to an ODM/OEM build definition rather than forcing a match. |
The same three states appear in the alternative source finder, so the wording on the tool, on the per-part pages and in the engineering reply stays identical.
What a reviewed reply does not assume
- It does not assume identical connector pin assignment from a matching pin count or pitch.
- It does not assume firmware reuse from a matching resolution and interface name.
- It does not assume a matching backlight driver from a nominal supply voltage.
- It does not substitute an inferred value for a missing document; the open item stays listed.
The compatibility verification checklist describes the full sequence used at sample approval.
FAQ
Can I request an evaluation with only the Tianma part number?
Yes. The finder accepts any code and opens a pre-filled engineering evaluation request. Additional documents are requested only where they are needed to close a specific open item.
Do you need the original datasheet before any comparison starts?
No. A label photo, connector photos and the host interface description support a first pass. Values reconstructed from those sources are marked as unconfirmed until the drawing arrives.
Is touch mandatory to specify at the first request?
No. Capacitive, resistive or no touch is a project option on the ODM/OEM build and can be decided during the review.
Request an engineering review
Send the original Tianma part number together with the interface, mechanical envelope and backlight conditions of your design. RONEN engineering compares the published parameters, lists every open item and confirms the recommended module per project before any order is placed.
Contact RONEN engineering → · Search by part number →
This is an engineering cross-reference, not an unconditional interchangeability commitment. Final fit is confirmed per project.